Sudden onset of back pain near spinal joint, difficulty in moving, ear and eye pain, fainting feeling during intercourse. Cause?

hi Dr. Last night my wife suddenly started having pain in her back of the head near the spinal joint and she was not able to move and she had tereble pain in her ears, eyes face and she was fainting , her hands and body stoped moving and she was not able to hold her neck even. after few minutes that pain started reducing and slowly she was recovering and then that pain left in her neck back and upper part of neck near the shoulder . I gave her juice and some sweets and then after when she got a bit better, i gave her 2 Panadol, as we were in last moments of intercourse so thought she might had her suger level dropped down.